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CLC number: TH137

On-line Access: 2011-04-11

Received: 2010-09-14

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Crosschecked: 2011-03-17

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.4 P.301-309


Output speed and flow of double-acting double-stator multi-pumps and multi-motors

Author(s):  De-sheng Wen, Zhi-li Wang, Jun Gao, Yong Zhang, Shi-jun Lv, Tetsuhiro Tsukiji

Affiliation(s):  College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China, College of Engineering and Applied Science, Sophia University, Tokyo 102-8554, Japan

Corresponding email(s):   Chily666@163.com

Key Words:  Multi-pumps, Multi-motors, Flow rate, Rotational speed, Hydraulic transmission, Differential motor

De-sheng Wen, Zhi-li Wang, Jun Gao, Yong Zhang, Shi-jun Lv, Tetsuhiro Tsukiji. Output speed and flow of double-acting double-stator multi-pumps and multi-motors[J]. Journal of Zhejiang University Science A, 2011, 12(4): 301-309.

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author="De-sheng Wen, Zhi-li Wang, Jun Gao, Yong Zhang, Shi-jun Lv, Tetsuhiro Tsukiji",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%T Output speed and flow of double-acting double-stator multi-pumps and multi-motors
%A De-sheng Wen
%A Zhi-li Wang
%A Jun Gao
%A Yong Zhang
%A Shi-jun Lv
%A Tetsuhiro Tsukiji
%J Journal of Zhejiang University SCIENCE A
%V 12
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%P 301-309
%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000405

T1 - Output speed and flow of double-acting double-stator multi-pumps and multi-motors
A1 - De-sheng Wen
A1 - Zhi-li Wang
A1 - Jun Gao
A1 - Yong Zhang
A1 - Shi-jun Lv
A1 - Tetsuhiro Tsukiji
J0 - Journal of Zhejiang University Science A
VL - 12
IS - 4
SP - 301
EP - 309
%@ 1673-565X
Y1 - 2011
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000405

The primary focus of this study was to investigate a series of novel motors and pumps, based on a new type of structure called double-stator. The double-stator structure can be used as pump or motor just based on the application requirements. A certain amount of pumps or motors can be formed in one shell, and these sub-pumps or sub-motors can work alone or be combined without influence on each other. So this kind of double-stator pump (motor) is called a multi-pump (multi-motor). Through the analysis of multifarious connection modes of the double-acting double-stator multi-pumps and multi-motors, the mathematical expressions of the output flow rate and the rotational speed are acquired. The results indicate that a quantity of different flow rates can be provided by one fixed-displacement multi-pump under the condition of unalterable driven speed by electromotor. Likewise, when supplied by settled input flow, without complex variable mechanism, the functions of double-speed, multiple-speed, and even differential connection can be obtained by employing the use of a double-stator multi-motor. The novel hydraulic transmission is made of such a double-stator multi-pump and multi-motor, and has broad application prospects.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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